Wide Sargasso Sea; by Jean Rhys.

I read this, fascinated by the unfamiliar historical details of a land that was familiar - the days of slavery in south, that is, geographically southeast, of US - and then there was the journey over the ocean with descriptions of the phenomena the title is taken from.

It was not until I finished the book and found the end strange and puzzled over it that there were goosebumps - realising where the story connected.